Intelligent ship power management system with current monitoring function

Abstract

The utility model discloses a ship intelligent power management system with a current monitoring function, which comprises a fuse and a load, the fuse is connected with a power supply, a current measuring resistor is arranged between the fuse and the load, two ends of the current measuring resistor are connected with a signal processing circuit, and the signal processing circuit is connected with a cabin alarm module. The fuse can monitor the current change in real time, and transmits the data to the cabin alarm module in real time for analysis and alarm. When the current exceeds a set range, the cabin alarm module can give an alarm in time, and potential electrical faults or fire hazards are avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of ship control, and particularly relates to a ship intelligent power management system with a current monitoring function. Background Technique

[0002] In the ship field, the power management system (PMS, Power Management System) is a core component responsible for the automatic management and control of the ship's power system. The PMS ensures the coordinated operation of each link such as the generator set, power distribution, and load management to guarantee the stability and efficiency of the ship's power system under various working conditions. In traditional ship PMS, the fuse, as a circuit protection component, is widely used to prevent equipment damage caused by overcurrent or short circuit.

[0003] The fuse realizes protection by disconnecting the circuit when the current exceeds its rated value. Although this traditional protection mechanism performs well in preventing electrical faults, due to its passive characteristics, the fuse only provides protection after a fault occurs and lacks real-time current monitoring and early warning functions. With the improvement of the complexity and intelligent requirements of the ship's power system, the traditional fuse can no longer meet the requirements of modern power management systems for real-time monitoring and refined management.

[0004] In the existing ship power management system (PMS), although the traditional fuse can provide basic overcurrent protection functions, it has the following disadvantages:

[0005] 1) Unable to monitor the current status in real time: The traditional fuse can only protect by fusing when a fault occurs and cannot provide real-time current monitoring and diagnostic information. Therefore, before a device fault occurs, abnormal current changes cannot be detected in advance, resulting in the inability to perform timely preventive maintenance.

[0006] 2) Lack of intelligent monitoring and data analysis: The existing systems usually rely on manual regular inspection of the fuse status, with low efficiency and easy omission of potential problems. It is impossible to integrate the current monitoring data with the AMS (engine room alarm system) for remote monitoring, data analysis, and trend prediction. Content of the Utility Model

[0007] In order to make up for the deficiencies of the existing technology, the utility model provides a ship intelligent power management system with a current monitoring function. By integrating a current measuring resistor into the fuse circuit, the current data is transmitted to the engine room alarm module in real time to achieve the purpose of real-time current monitoring and intelligent system integration. To achieve this purpose, the specific technical solution of the utility model is as follows:

[0008] The described intelligent ship power management system with current monitoring function includes a fuse and a load. The fuse is connected to a power source. A current measuring resistor is arranged between the fuse and the load, and both ends of the current measuring resistor are connected to a signal processing circuit, which is connected to an engine room alarm module.

[0009] Further, the current measuring resistor is directly welded or fixed on the circuit board inside the fuse and is electrically connected to the input end and the output end of the fuse; the signal processing circuit is integrated inside the fuse housing and is adjacent to the current measuring resistor.

[0010] Further, the resistance value of the current measuring resistor is at the milliohm level.

[0011] Further, the signal processing circuit includes an operational amplifier, a low-pass filter, a voltage follower, and a digital filtering and digital processing CPU unit. The voltage signal generated by the current measuring resistor is amplified by the operational amplifier in sequence, the high-frequency noise is removed by the low-pass filter, the output signal is stabilized by the voltage follower, and the signal is digitally filtered and digitally processed by the digital filtering and digital processing CPU unit.

[0012] Further, a data transmission module is arranged between the signal processing circuit and the engine room alarm module to convert the voltage signal processed by the signal processing circuit into a digital signal suitable for the engine room alarm module to process and transmit it to the engine room alarm module by wired or wireless means.

[0013] Further, a data processing unit is arranged inside the engine room alarm module to receive and analyze the transmitted current signal and monitor the current in real time.

[0014] Compared with the prior art, the present utility model has the following advantages: The management system of this application not only realizes the real-time monitoring of current, but also improves the safety, reliability, and maintenance efficiency of the electrical system through the signal processing circuit and the engine room alarm module. That is, the fuse can monitor the current change in real time and transmit the data to the engine room alarm module immediately for analysis and alarm; when the current exceeds the set range, the engine room alarm module can issue an alarm in time to avoid potential electrical faults or fire hazards. This system integrates the current monitoring function into the fuse, reducing the need for independent monitoring devices and lowering the system complexity and cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a system block diagram of the present utility model;

[0016] Figure 2 It is a working flow chart of the system of the present utility model.

[0017] In the figure: 1 - power supply, 2 - fuse, 3 - current measuring resistor, 4 - signal processing circuit, 41 - operational amplifier, 42 - low - pass filter, 43 - voltage follower, 44 - digital filtering and digital processing CPU unit, 5 - load, 6 - engine room alarm module. Specific implementation mode

[0018] The following further describes a ship intelligent power management system with a current monitoring function according to the present utility model in conjunction with the accompanying drawings.

[0019] As Figure 1 shown, a ship intelligent power management system with a current monitoring function includes a fuse 2 and a load 5. The fuse 2 is connected to the power supply 1. A current measuring resistor 3 is arranged between the fuse 2 and the load 5. Both ends of the current measuring resistor 3 are connected to a signal processing circuit 4, and the signal processing circuit 4 is connected to an engine room alarm module 6; a data transmission module is arranged between the signal processing circuit 4 and the engine room alarm module 6, which converts the voltage signal processed by the signal processing circuit 4 into a digital signal suitable for the engine room alarm module 6 to process, and transmits it to the engine room alarm module 6 by wired or wireless means. Among them, the fuse 2 includes a fuse wire, a housing, a terminal, etc. The current measuring resistor 3 is directly welded or fixed on the circuit board inside the fuse 2 and is electrically connected to the input end and the output end of the fuse 2; the signal processing circuit 4 is integrated inside the housing of the fuse 2 and is adjacent to the current measuring resistor 3 to ensure that the signal processing process is not interfered by the outside world. The data transmission module is connected to the engine room alarm module 6 and can be arranged outside or inside the fuse 2, and the specific position is determined according to the ship design and installation requirements.

[0020] In this application, the current measuring resistor 3 is installed at the load end of the fuse circuit and is used to detect the current passing through the fuse 2. The resistance value of the current measuring resistor 3 is very small, usually in the milliohm level, to ensure accurate current measurement without significantly affecting the circuit performance.

[0021] The signal processing circuit 4 includes an operational amplifier 41, a low - pass filter 42, a voltage follower 43 and a digital filtering and digital processing CPU unit 44. The voltage signal generated by the current measuring resistor 3 is amplified by the operational amplifier 41 in sequence, the high - frequency noise is removed by the low - pass filter 42, the output signal is stabilized by the voltage follower 43, and the signal is digitally filtered and digitally processed by the digital filtering and digital processing CPU unit 44 to ensure signal accuracy.

[0022] A data processing unit is arranged in the engine room alarm module 6 to receive and analyze the transmitted current signal and monitor the current in real time. The engine room alarm module 6 monitors the current in real time through a built - in algorithm and judges whether to trigger an alarm according to the set threshold. This algorithm can adopt the commonly used algorithms in this field as long as it can realize real - time monitoring and judging whether to trigger an alarm according to the set threshold.

[0023] It can be understood that the fuse 2, as a traditional overcurrent protection component, automatically cuts off the circuit when the current exceeds the rated value to prevent equipment damage. In this application, the current measuring resistor 3 is integrated into the fuse 2 circuit to achieve real-time current monitoring without affecting the function of the fuse 2; the voltage signal output by the current measuring resistor 3 is amplified, filtered and stabilized by the signal processing circuit 4; the processed current signal is reliably transmitted to the engine room alarm module 6 through the data transmission module; the engine room alarm module 6 is integrated with the fuse 2, receives and analyzes the current signal, and intelligently judges whether to trigger an alarm; real-time current monitoring and alarm triggering are achieved through the current measuring resistor 3 and the engine room alarm module 6.

[0024] As Figure 2 shown, in the specific use process, the specific working process of the power management system of this application is as follows:

[0025] 1) In the normal working state, the current signal detected by the current passing through the fuse 2 and the current measuring resistor 3 is amplified and stabilized by the signal processing circuit 4;

[0026] 2) The processed signal is transmitted to the engine room alarm module 6 through the data transmission module, and the engine room alarm module 6 monitors the signal according to the preset current threshold;

[0027] 3) When the current exceeds the set threshold range, the engine room alarm module 6 triggers an alarm and displays or records relevant current abnormal information so that the crew can take corresponding operation measures;

[0028] 4) If the current returns to the normal range, the engine room alarm module 6 will stop the alarm and resume the monitoring state.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A ship intelligent power management system with a current monitoring function, comprising a fuse (2) and a load (5), the fuse (2) being connected to a power supply (1), characterized in that, A current measuring resistor (3) is arranged between the fuse (2) and the load (5), and both ends of the current measuring resistor (3) are connected to a signal processing circuit (4), and the signal processing circuit (4) is connected to the engine room alarm module (6).

2. The intelligent ship power management system with current monitoring function according to claim 1, characterized in that, The current measuring resistor (3) is directly welded or fixed on the circuit board inside the fuse (2) and is electrically connected to the input end and the output end of the fuse (2); the signal processing circuit (4) is integrated in the outer shell of the fuse (2) and is adjacent to the current measuring resistor (3).

3. A ship intelligent power management system with a current monitoring function according to claim 1 or 2, characterized in that, The resistance value of the current measuring resistor (3) is at the milliohm level.

4. The intelligent ship power management system with current monitoring function according to claim 1, characterized in that The signal processing circuit (4) includes an operational amplifier (41), a low-pass filter (42), a voltage follower (43) and a digital filtering and digital processing CPU unit (44). The voltage signal generated by the current measuring resistor (3) is amplified by the operational amplifier (41) in sequence, the high-frequency noise is removed by the low-pass filter (42), the output signal is stabilized by the voltage follower (43), and the signal is digitally filtered and digitally processed by the digital filtering and digital processing CPU unit (44).

5. The intelligent ship power management system with current monitoring function according to claim 1, characterized in that, A data transmission module is arranged between the signal processing circuit (4) and the engine room alarm module (6) to convert the voltage signal processed by the signal processing circuit (4) into a digital signal suitable for processing by the engine room alarm module (6) and transmit it to the engine room alarm module (6) by wired or wireless means.

6. The intelligent ship power management system with current monitoring function according to claim 1 or 5, characterized in that, A data processing unit is arranged in the engine room alarm module (6) to receive and analyze the transmitted current signal and monitor the current in real time.

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